If it's going to more of a race motor then the 48's are perfect.
As for the cam, the webcam 86c is a very good cam for high rpm, doesn't do much before 4k but will hang into 7500-8000rpm no problem.
If money us no object then a JPM Raptor cam is the way forward and worth another 20-30 hp over a "normal" cam - not cheap but the best you can buy.

One thing I would absolutely recommend is that once you have the crank, flywheel and clutch together have them balanced as a complete unit, it's essential for longevity

Funny that, money is an issue at the mo but engines always seem to come first.

Took my current 82mm to Stateside this morning to be balanced with one of their full weight flywheels and stage 1

Then decided to buy a new DPR 82 crank, which jim will do all the above work to. Now that I'm considering taking a little longer and build something better. Currently have a new fk8 to replace what I had but could hopefully exchange that up.

Only have my bus for transport but realizing I need look after this size motor in terms of milage.